George g



G. G. WHITNEY.

SHAFT f'sIA'RlNal APPLICATION FILED APR. 1I, |915.

l :Patented Aug. 8

IIIIII IIIII 'To all Iwhom it may. concern imirn'nl sfratrns PATENT onirica.

Specification of Letters atnt. Application filed prill, 1916. Serial No; 91,001.

lie it known that I, Gnonen Gr. WiirrNiiY, and reduced ends 5 and @one bf which is exa citizen of. the United States of America, teriorly screwthreaded. Inone end of the residing 'it Detroit, in the county of Wayne barrel 3 .is mounted. a spindle bushiii`g` 7 3, said barrelhaving a longitudinal bore 4:A

Bearings, of which the following is a specification, reference being had therein tothel accompanying drawings.

This inventionyrelates to shaft bearings, and one of ther features of my invention includes'coiiical members which maybe easily and quickly adjusted to compensate for wear and provider :inaccurate and true journal for va shaft relative to a piece `of work or adjacent parts `of a mac iine.

Another feature of my" invention is that 4 of a thorough lubrication for the journal members ofthe bearing, and this and other features are best exemplified in agrinder' head which lrequires a true and accurate spindle and bearing.. l

Grinder heads, as a general rule, are subjected to stresses and unevenly wear the bearings of the spindle or shaft of the grinder head, and besides compensating for such wear, 'my-invention aims to insure -a nonfrictional rotation of the grinder shaft in its bearings and to provide. for expansion due to overheating. l' i My invention is further characterized by parts that are easy to assemble, durable, in-

expensive to manufacture and highly eilicient as a. bearing.

My invention will be hereinafter described and then claimed, and reference will now be had to the drawing, wherein- Figure 1 is a longitudinal sectional view cfa grinder head embodying features of niv invention; Fig. 2 is an end kview of the same; and Fig. 3 is a cross sectional view taken on Vorv about the line III-III of Fig.'1. y

. In describin my invention `by aid of the Patented Aug. s, 1916; i

spin le or shaft 9, said spindle extending .v

throu h the bore 4 of the` barrel. y,The outer end ofthe spindle bushing 7 has a peripheral Harige 10 abutting the reduced end 5 of the barrel 3 and saidbushing is held against longitudinal or rotative movement by al dovetail block 11 and a binding screw 12 the `head of which is countersunk in the barrel recess 13 providedtherefor in the inner end bushing has longitudinal lubricant groovesA 14 in communication with an annular cliannel 15 in the periphery of said." bushing, through the medium of ports 16. The barrel 3 has a filling opening 1.7 in communicamay be provided with an' oil or grease cup 18 serving as a reservoir for the channel 15. The shaft 9, adjacent the large end of the conical portion 8r thereof, has a threaded kportion 19 for nutsr20 and these. nuts are iriclosed by a dust cap 21 screwed upon the a cone member 25 keyed as at 26, or other'-l `wise secured upon the shaft 9. This cone member 25 is adapted to freely revolve .in

views above re erred'to, I desire to point oitkgthe lbushing 24 which forms abearing surthat a grinder head is shown for convenience f of illustration of the invention, and I do not scope of the appended claims.`

In the drawing, 1 denotes a base having a pedestal 2 provided with a barrel orhousing" faee therefor and the contacting rfaces of' said members ,are lubricated throughY .the medium of` grooves, ports and channels, similar to the lubrication'ofthe bushing 7.

The bushing 24 is held against rotation or and State of Michigan, have invented kcerhaving a tapering bore to receive aconical f tain new and useful Improvements inl Shaft, portion or iixedcone member 8 of al wheel 3, said dovetail member fitting in a dovetail strains which'tend to tion with the channel 15, `and this opening 230 A in the following manner. The dust cap 21' :is tiret removed and the nuts loosened sufficiently to permit oll a slight endwise movement of said spindle. The binding screw 28 is then loosened to release the block 27 sufficiently to permit a longitudinal movement `of the bushing 24 and the screw 30 removed to permit of the rotation of the adjusting ring 2l). Said adjusting ring is then turned and by reason of'its screwthreaded engagc ment with the projecting end of the bushingr Ql and its abutting relation tothe end of the barrel, Will-pull outwardly on the bushing, and becauistifof the outwardly iiicreasing diameter of the bore of'said bush Aing, the same will be brought into contact with its cone member 25 to take up the `wear between them .i The longitudinal movement of the bushing itl into contact with its cone which is fined on the spindle, will move said spindle endwise, carrying its cone portion S into contact with the bushing 7 and taking up the play between these surfaces simuitaneously with the adjustment of the bushing 24. The accurate adjustment of both bearings is thus accomplished by the turning of the single adjusting ring-29, and after the adjustment is made, said ring is then locked in adjusted position by the set screw and the nuts 20 are `again turned up against the iange l() of the bushing 'i' and the cap secured in place.

The conical portion S ot' the spindle being opposed to the cone member 25 with the end of largest diameter ot each member at the outer ends of their bearings, should the spin- Wdie become ovcrheatcd from any cause, the

resultant endWise expansion ofthe shaft and concs will not cause the cones to `bind in These conical surset up hard or stick in their bushings and prevent rotation of the spindle. The arrangement of` spaced cono bearings insures true and accurate rotation of the spindle,

and eliminating all endwise movement, the endwise as well as lateral )lay due to wear being accurately taken up by the turning of the adjusting ring.

My invention is not necessarily limited to the application of power to one end of the shaft, as the central portion of the barrel 8 may be out away to permit of power being applied between the journal membersof the bearing.

1. In a shaft bearing, a barrel, a shaft therein. reversely disposed conical members on said shaft, bushings in the ends of said barrel to receive said conical members and an adjusting member on one end of said barrel connected to one of said bushings adapted for adjustment to move said conical members and said shaft.

2. In a shaft bearing, a barrel, a shaft therein, reversely disposed conical members on said shaft, bushings in the ends of said barrel to receive the conical members and capable of longitudinal movement in said barrel, nuts on said shaft at one end of theV barrel adapted to be loosened to permit longitudinal movement of said shaft, and an adjusting member engaging the bushing at the opposite end of said barrel adapted to be rotated toshift said bushing toward its cone member and said shaft and other cone member in the same direction.

In testimony whereof I aftix my signature inthe presence of two Witnesses. i

suonati o. WHITNEY.

`preventing-,v'ibration at very high speeds` 

